公开(公告)号：US20170249223A1

公开(公告)日：2017-08-31

申请号：US15500064

申请日：2015-01-30

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Derek Alan SHERLOCK ,  Harvey RAY ,  Chris Michael BRUEGGEN

IPC: G06F11/20

CPC classification number: G06F11/2092 ,  G06F11/108 ,  G06F11/2094 ,  G06F2201/805

Abstract: According to an example, data corruption and single point of failure is prevented in a fault-tolerant memory fabric with multiple redundancy controllers by granting, by a parity media controller, a lock of a stripe to a redundancy controller to perform a sequence on the stripe. The lock may be broken in response to determining a failure of the redundancy controller prior to completing the sequence. In response to breaking the lock, the parity cacheline of the stripe may be flagged as invalid. Also, a journal may be updated to document the breaking of the lock.

公开(公告)号：US20170192714A1

公开(公告)日：2017-07-06

申请号：US15313690

申请日：2014-07-31

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Harvey RAY ,  Derek Alan SHERLOCK ,  Gregg B. LESARTRE

IPC: G06F3/06

CPC classification number: G06F3/0647 ,  G06F3/0619 ,  G06F3/065 ,  G06F3/0656 ,  G06F3/0683 ,  G06F11/108

Abstract: According to an example, hierarchal stripe locks may be obtained for a source stripe and a destination stripe. In response to receiving data for the source stripe, the data is written from the source stripe to the destination stripe, and the hierarchal stripe locks are released for the source stripe and the destination stripe. In response to receiving the data-migrated token, the hierarchal stripe locks are released for the source stripe and the destination stripe.

公开(公告)号：US20170242769A1

公开(公告)日：2017-08-24

申请号：US15500063

申请日：2015-01-30

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Derek Alan SHERLOCK ,  Harvey RAY ,  Michael KONTZ

IPC: G06F11/20

CPC classification number: G06F11/2092 ,  G06F11/0727 ,  G06F11/0751 ,  G06F11/1084 ,  G06F2201/805 ,  G06F2201/82 ,  G06F2211/1009

Abstract: According to an example, a failed component in a fault-tolerant memory fabric may be determined by transmitting request packets along a plurality of routes between the redundancy controller and a media controller in periodic cycles. The redundancy controller may determine whether route failures for all of the plurality of routes have occurred within a number of consecutive periodic cycles. In response to determining that route failures for all of the plurality of routes have occurred within a number of consecutive periodic cycles, the media controller is established as failed. In response to determining that route failures for less than all of the plurality of routes have occurred within the number of consecutive periodic cycles, a fabric device is established as failed.

公开(公告)号：US20170242753A1

公开(公告)日：2017-08-24

申请号：US15500067

申请日：2015-01-30

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Derek Alan SHERLOCK ,  Harvey RAY

IPC: G06F11/10 ,  G06F3/06

CPC classification number: G06F11/1088 ,  G06F3/0619 ,  G06F3/064 ,  G06F3/0689 ,  G06F11/1443 ,  G06F11/2007

Abstract: According to an example, a retransmission sequence involving non-idempotent primitives in a fault-tolerant memory fabric may be modified. For example, a redundancy controller may request a sequence to access a stripe in the fault-tolerant memory fabric, wherein the sequence involves a non-idempotent primitive. In response to determining an expiration of a time threshold for the non-idempotent primitive, the redundancy controller may read other data in other cachelines in the stripe, calculate a new parity value by performing an idempotent exclusive-or primitive on the new data with the other data in the stripe, and write the new parity to the stripe using an idempotent write primitive.

公开(公告)号：US20170242745A1

公开(公告)日：2017-08-24

申请号：US15500080

申请日：2015-03-31

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Derek Alan SHERLOCK ,  Harvey RAY

IPC: G06F11/07

CPC classification number: G06F11/0793 ,  G06F11/0727 ,  G06F11/0751 ,  G06F11/079 ,  G06F11/1076 ,  G06F11/2017 ,  G06F11/2092

Abstract: An example device in accordance with an aspect of the present disclosure includes a redundancy controller and/or memory module to prevent data corruption and single point of failure in a fault-tolerant memory fabric. Devices include engines to issue and/or respond to primitive requests, identify failures and/or fault conditions, and receive and/or issue containment mode indications.